About ZoneKit
ZoneKit is a free collection of time and time-zone utilities. We built it because the existing options either bury simple tools under cluttered interfaces, demand a sign-up before showing you a clock, or feel stuck in 2005. We wanted something fast, clean, and trustworthy.
What we offer
- World Clock — see the current time in any city, side by side, with day labels for cities that are already on tomorrow.
- Meeting Planner — find the overlap of working hours across multiple time zones at a glance, with a colour-coded grid that makes "works for everyone" obvious.
- Time Zone Converter — answer "what's 3 PM New York in Tokyo?" instantly, with cross-day shifts highlighted so you never schedule on the wrong day.
- Countdown Timer — track days, hours, and minutes until any future date, with shareable links so you can send a countdown to anyone.
How it works
We've deliberately kept the site lightweight. No pop-ups, no sign-up walls, no scripts that follow you around the web, no notifications begging you to come back. Your preferences — the cities you've added, your format choice, your saved countdowns — stay on your own device. Clear your browser data and the site forgets everything. There's no copy of it on our end, because we don't store it anywhere.
For the time calculations themselves, we rely on the same time-zone information your phone and computer already use. That means our times stay accurate automatically through daylight saving transitions and the occasional zone rule change — whenever your device gets a software update, our clocks benefit too. You don't need to refresh, reconfigure, or do anything.
Who we are
ZoneKit is built and maintained by a small independent team. We're not VC-funded, we don't have an enterprise plan to upsell, and we don't sell or share your data. The site is supported by display advertising.
Why we take time zones seriously
Time zones look simple until you actually depend on getting them right. A misjudged offset means a colleague joins a call at midnight, a family member is woken at 4 AM, or a deadline slips by a day because "Friday" meant something different on each end. The rules are genuinely fiddly — half-hour offsets, daylight saving that starts on different dates in different countries, whole nations that run one clock across thousands of miles, and the international date line quietly adding or removing a calendar day. Most tools either ignore these edge cases or bury them under clutter. We've tried to build the opposite: tools that handle the awkward parts quietly and correctly, paired with explanatory content that actually teaches the "why" behind the number rather than just displaying it.
Our approach to privacy and funding
ZoneKit is free to use and always will be. It's supported by display advertising, which is what keeps the lights on without a paywall or a sign-up wall. We don't sell your data, and the tools themselves run entirely in your browser — the cities you add, your format preferences, and your saved countdowns never leave your device. Advertising is managed through Google's consent framework, so you control what's stored through the cookie banner shown on your first visit. If you'd like the full detail, our Privacy Policy spells it out plainly, in language written for people rather than lawyers.
Other tools we've built
If you found ZoneKit useful, you might also like our other free tools:
- ScrambleWise — free word-puzzle tools: Word Unscrambler, Anagram Solver, Crossword Solver, Scrabble Cheat, Word Finder, Rhyming Dictionary, plus a regularly updated strategy blog. No sign-up, privacy-first.
Get in touch
For questions, feature suggestions, or bug reports, see our Contact page. We read every message.